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CVE-2019-17639

MEDIUMCVSS 5.3/10EPSS 1.50%

Last modified

CVE-2019-17639 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In Eclipse OpenJ9 prior to version 0.21 on Power platforms, calling the System.arraycopy method with a length longer than the length of the source or destination array can, in certain specially crafted code patterns, cause the current method to return prematurely with an undefined return value. This allows whatever value happens to be in the return register at that time to be used as if it matches the method's declared return type.. EPSS estimates a 1.50% chance of exploitation in the next 30 days.

Description

In Eclipse OpenJ9 prior to version 0.21 on Power platforms, calling the System.arraycopy method with a length longer than the length of the source or destination array can, in certain specially crafted code patterns, cause the current method to return prematurely with an undefined return value. This allows whatever value happens to be in the return register at that time to be used as if it matches the method's declared return type.

Metrics

CVSS 3.1
5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability
1.50%

71.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
EclipseOpenj9<= 0.20.0
EclipseOpenj90.21.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-17639?
In Eclipse OpenJ9 prior to version 0.21 on Power platforms, calling the System.arraycopy method with a length longer than the length of the source or destination array can, in certain specially crafted code patterns, cause the current method to return prematurely with an undefined return value. This allows whatever value happens to be in the return register at that time to be used as if it matches the method's declared return type.
How severe is CVE-2019-17639?
CVE-2019-17639 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.50% probability of exploitation in the next 30 days.
How do I fix CVE-2019-17639?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17639?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST